<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>文档标题</title>
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
    <%-include('./common/header.html')%>
    <p><%=a+b%></p>
    <p><%-str%></p>
    <ul>
        <% for (let i = 0; i < arr.length; i++) { %>
        <li><%=arr[i]%></li>
        <% } %>
    </ul>
    <%-include(footer)%>
</body>
</html>